N+1 Modular 125VDC 20A Single 95% Efficiency Telecom Rack-Mounted DC-DC Converter Battery Charger for Industrial Applications

Product Description

N+1 Modular 125VDC 20A Single 95% Efficiency Telecom Rack-Mounted DC-DC Converter Battery Charger for Industrial Applications
MODEL EVS11020-R3B1 EVS11060-R3B3 EVS11080-R3B4
Environmental Operating temperature -40°C ~ 55°C
Storage temperature -40°C ~ 70°C
Relative humidity ≤ 90%RH (30°C)
Altitude ≤ 2000m (derating is necessary above 2,000m)
AC Input AC input system 220Vac/380Vac 220Vac/380Vac
Input voltage range 220Vac/380Vac 220Vac/380Vac
Input AC voltage frequency 45Hz ~ 65Hz
Max input current 28.4A
Power factor ≥ 0.99
DC Output Nominal output voltage 110VDC
Rated output voltage 121VDC
Rated Output Capacity 2400W 7200W 9600W
Output DC voltage 90VDC ~ -150VDC
Output DC current 60A 60A 80A
Voltage set-point accuracy ≤ 1%
Efficiency ≥ 92%
Noise (peak-peak) ≤ 200mV (0 ~ 20MHz)
Weighted noise ≤ 2mV (300Hz ~ 3400Hz)
AC Input Alarm and Protection AC input over-voltage alarm point Default: 280VAC ± 5VAC
AC input under-voltage alarm point Default: 176VAC ± 5VAC
AC input over-voltage protection recovery difference Default: 295VAC ± 5VAC, 10VAC lower than the AC input over-voltage protection point
AC input under-voltage protection point Default: 180VAC ± 5VAC
DC Output Alarm And Protection DC output over-voltage alarm point Default: 149VDC ± 0.5VDC
DC output under-voltage alarm point Default: 90VDC ± 0.5VDC
DC output over-voltage protection point Default: 97.2VDC ± 0.5VDC
LLVD Default: 99VDC ± 0.5VDC
BLVD Default: 97.2VDC ± 0.5VDC
Rectifier Load sharing The rectifiers can work in parallel and share the current. The unbalance is better than ± 5% rated output current.
Derated by input (at 45°C) The rectifier can output power of 100% with input voltage of ≥154VAC; The rectifier can output power capacity 1200W with input voltage <154VAC;
Rectifiers under-voltage stop with input voltage of 85VAC
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Detailed Dimensions and Specifications
System Interface Diagram
Internal Component Layout
Wiring Configuration Guide
Product Performance Analytics
Industrial Installation Scenario
Frequently Asked Questions
What are the primary applications of this rack-mounted DC-DC converter battery charger?
This modular N+1 system is specifically designed for industrial applications, telecom environments, and backup power utilities where highly reliable 110VDC/125VDC battery charging and conversion are required.
How does the N+1 modular architecture benefit my system operations?
The N+1 modular design provides active redundancy. If one module goes offline, the remaining operational modules seamlessly share and take over the load to prevent system downtime. The active load sharing unbalance is strictly managed within ±5% of the rated output current.
What input and output voltage ranges does this system support?
The system supports AC inputs of 220Vac/380Vac (frequency 45Hz~65Hz) and offers a nominal DC output of 110VDC (adjustable range from 90VDC to 150VDC) with high voltage set-point accuracy under ≤1%.
What protection mechanisms are integrated into this DC battery charger?
It features exhaustive AC input alarms (over-voltage alarm at 280VAC, under-voltage protection at 180VAC) and DC output protection points, including LLVD (Low Voltage Load Disconnect) and BLVD (Battery Low Voltage Disconnect) to prevent deep discharge of your critical battery bank.
How does the rectifier behave under low input voltage scenarios?
At an ambient temperature of 45°C, the rectifier outputs 100% full capacity with input voltages ≥154VAC. For input voltages below 154VAC, it automatically derates to a 1200W capacity, and will securely shut off if the voltage drops below 85VAC.
What are the environmental constraints of this charger module?
It is built for rugged operations with an operating temperature window of -40°C to 55°C and storage capabilities from -40°C to 70°C. It performs reliably up to an altitude of 2000m, beyond which standard derating applies.

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